Using the Thermistor Cheat Sheet to Help Test Dryer Thermistors

When a dryer fails to heat, one of the suspect components is the thermistor, which monitors and regulates the dryer's temperature. Diagnosing a faulty thermistor can be time-consuming without proper resources. That’s where the Thermistor Cheat Sheet from Tech Circuit becomes invaluable.

The cheat sheet provides a detailed table of common thermistor resistance values at specific temperatures. Instead of guessing or hunting down technical manuals, you can quickly compare your thermistor’s readings to the cheat sheet. For example, at room temperature (~77°F or 25°C), a properly functioning thermistor might have a resistance of 10k ohms. A significantly higher or lower reading indicates the thermistor is faulty and needs replacement. Note also that certain errors such as HE and HC may be attributed to faulty thermistors providing inaccurate information to the control board. 

Using this resource eliminates the need for trial-and-error troubleshooting. It saves time by allowing technicians to diagnose the problem confidently without additional tools or unnecessary disassembly. Additionally, the cheat sheet helps differentiate between thermistor issues and other potential causes of heating problems, such as faulty heating elements or control boards.

You can test thermistors directly or at the control board if you know which connector at the board corresponds to the thermistor input. 

Incorporating the Thermistor Cheat Sheet into your toolkit streamlines the diagnostic process, enhances efficiency, and minimizes downtime—essential for professionals and DIY enthusiasts alike.